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Does anybody have the diagrams as well as pictures, comparisons of before and after of what is needed to convert the RHD motor harness to LHD. Also anyother suggestions on what to do. And can the RS harness be modified for use?
Thank you
Ben.

I'm in the same boat.
I'm gonna start from US WRX wiring and modifiy it to fit on JDM ECU and engine plugs. I thought this'll be faster than extending every wire of JDM wiring. Hopefull I can make it work.
Probably you can swap the connectors from JDM wiring onto US WRX wiring.

Well I can only hope it will be plug and play ( or at least the wiring will be the same and I will only need to change the plugs) Anyway since I cant find the instructions anywhere once I do it I will post photos of how it was done here and have it stickied so everyone can use it!!!!! Good luck on your swap what version are you using? Where did you get it?

It will all depends on what motor you get to do the conversion. I'm pretty sure it's not just plugs, but different wiring. but, after the splicing and soldering of the main wiring harness(15-20lbs of wire), it'll be plug and play.